• Hydroxysteroid dehydrogenases in the ovary of larva, pupa and adult eri silkworm,Philosamia ricini (Hutt.)—A histochemical study

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    • Keywords


      Eri silkworm; ovary; vitellogenesis; hydroxysteroid dehydrogenases

    • Abstract


      Histochemical analysis of the various developmental stages ofPhilosamia ricini showed the presence of Δ5-3β-hydroxysteroid dehydrogenase, 17β-hydroxysteroid dehydrogenase, 11β-hydroxysteroid dehydrogenase and glucose-6-phosphate dehydrogenase in the lamellar epithelial cells, precursors of oocytes, nurse cells and follicle epithelial cells of the germarium of larva and pupa, oocyte-nurse cells complex, follicle epithelial cells of immature and mature follicles and intermediate cells of pupa suggesting that these tissues are able to metabolize Δ5-3β-hydroxysteroids, 17β-hydroxysteroids and 11β-hydroxysteroids to corresponding ketosteroids.

    • Author Affiliations


      H K Hurkadli1 M A Hooli2

      1. Karnataka State Sericulture Development Institute, Thalaghattapura, Bangalore - 560 062, India
      2. Department of Zoology, Karnataka University, Dharwad - 580 003, India
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